The lengthy wait between installments could be taken as a sign of Sega's effort to make Sonic the Hedgehog 4 Episode II a better game than its underperforming predecessor. In some ways, that's true. Improved physics, crisply-detailed environments, and a handful of interesting new gameplay tweaks give this second jaunt better staying power, but with speed and precision being crucial ingredients for a successful Sonic outing, Episode II's frustrating touch controls just don't keep up.